Alert archive / Missouri / Tornado Watches in 2009
Tornado Watch 443
The Storm Prediction Center issued this tornado watch at Jun 17, 2009, 3:09 PM CDT for Johnson County, Leavenworth County, Wyandotte County, Kansas; 41 counties in Missouri. It was in force for 7 hr.
The area
The outline as issued.
The facts
- Issued
- Jun 17, 2009, 3:09 PM CDT (20:09 UTC)
- Expired
- Jun 17, 2009, 10:00 PM CDT
- In force
- 7 hr
- Issued by
- the Storm Prediction Center
- Largest hail expected
- 3 in
- Strongest gust expected
- 70 kt
All 44 counties
Johnson County, KS, Leavenworth County, KS, Wyandotte County, KS, Adair County, MO, Audrain County, MO, Boone County, MO, Caldwell County, MO, Callaway County, MO, Carroll County, MO, Cass County, MO, Chariton County, MO, Clay County, MO, Clinton County, MO, Cole County, MO, Cooper County, MO, Daviess County, MO, Gasconade County, MO, Grundy County, MO, Harrison County, MO, Howard County, MO, Jackson County, MO, Johnson County, MO, Knox County, MO, Lafayette County, MO, Lewis County, MO, Linn County, MO, Livingston County, MO, Macon County, MO, Marion County, MO, Mercer County, MO, Moniteau County, MO, Monroe County, MO, Montgomery County, MO, Osage County, MO, Pettis County, MO, Platte County, MO, Putnam County, MO, Ralls County, MO, Randolph County, MO, Ray County, MO, Saline County, MO, Schuyler County, MO, Shelby County, MO, Sullivan County, MO
The radar
The Pleasant Hill radar (KEAX), 129 km from the middle of the area, began a volume at 20:09 UTC, the scan nearest the moment this went out.
Open the radar archive at this moment
The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.
What SPC expected
The probabilities SPC published with the watch, for the watch area over its life.
- Two or more tornadoes
- 40%
- One or more EF2 to EF5 tornadoes
- 20%
- Ten or more severe wind reports
- 60%
- One or more gusts of 65 knots or more
- 40%
- Ten or more severe hail reports
- 80%
- One or more hailstones of 2 inches or more
- 70%
- Six or more combined severe hail and wind reports
- 90%
Warnings issued inside it
22 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 17, 4:26 PM CDT | Severe Thunderstorm Warning | EAX | Buchanan, Clinton, DeKalb | 49 min |
| Jun 17, 4:46 PM CDT | Severe Thunderstorm Warning | EAX | Caldwell, Clinton, Daviess, DeKalb | 29 min |
| Jun 17, 5:15 PM CDT | Severe Thunderstorm Warning | EAX | Buchanan, Caldwell, Clinton, DeKalb | 30 min |
| Jun 17, 5:45 PM CDT | Severe Thunderstorm Warning | EAX | Caldwell, Carroll, Clay, Clinton, DeKalb, Livingston and 1 more | 30 min |
| Jun 17, 5:59 PM CDT | Flash Flood Warning | EAX | Caldwell, Clinton, Daviess, DeKalb, Ray | 4 hr |
| Jun 17, 6:13 PM CDT | Severe Thunderstorm Warning | EAX | Caldwell, Carroll, Lafayette, Livingston, Ray | 32 min |
| Jun 17, 6:32 PM CDT | Flash Flood Warning | EAX | Carroll | 3 hr |
| Jun 17, 6:39 PM CDT | Severe Thunderstorm Warning | EAX | Carroll, Chariton, Lafayette, Ray, Saline | 36 min |
| Jun 17, 6:46 PM CDT | Severe Thunderstorm Warning | LSX | Audrain, Boone, Callaway | 44 min |
| Jun 17, 6:51 PM CDT | Tornado Warning | EAX | Carroll, Saline | 24 min |
| Jun 17, 7:13 PM CDT | Severe Thunderstorm Warning | EAX | Carroll, Chariton, Cooper, Howard, Lafayette, Pettis and 1 more | 32 min |
| Jun 17, 7:29 PM CDT | Severe Thunderstorm Warning | LSX | Audrain, Boone, Callaway, Montgomery | 46 min |
| Jun 17, 7:39 PM CDT | Tornado Warning | LSX | Callaway | 37 min |
| Jun 17, 7:41 PM CDT | Flash Flood Warning | LSX | Boone | 4 hr |
| Jun 17, 8:11 PM CDT | Severe Thunderstorm Warning | EAX | Cooper, Howard | 34 min |
| Jun 17, 8:14 PM CDT | Severe Thunderstorm Warning | LSX | Callaway, Gasconade, Montgomery, Osage | 46 min |
| Jun 17, 8:21 PM CDT | Flash Flood Warning | LSX | Callaway | 4 hr |
| Jun 17, 8:44 PM CDT | Severe Thunderstorm Warning | EAX | Cooper, Howard | 31 min |
| Jun 17, 8:45 PM CDT | Severe Thunderstorm Warning | LSX | Boone, Moniteau | 17 min |
| Jun 17, 8:47 PM CDT | Severe Thunderstorm Warning | EAX | Cooper, Howard | 28 min |
| Jun 17, 8:59 PM CDT | Severe Thunderstorm Warning | LSX | Franklin, Gasconade, Osage | 46 min |
| Jun 17, 9:44 PM CDT | Severe Thunderstorm Warning | LSX | Crawford, Franklin, Gasconade | 46 min |
Discussions around it
SPC mesoscale discussions over the same counties from four hours before the watch to its end.
The nearest sounding before it
Topeka, KS (KTOP), launched 12:00Z, 8.2 hours before the alert went out and 201 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.
- Mixed-layer CAPE
- 2807 J/kg
- Mixed-layer CIN
- -98 J/kg
- Mixed-layer LCL
- 1117 m above ground
- 0-6 km bulk shear
- 38 kt
- 0-1 km storm-relative helicity
- 13 m²/s²
- 0-3 km storm-relative helicity
- 99 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 3.7
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 16, 8:26 PM CDT | Severe Thunderstorm Watch | SPC | Allen, Bourbon, Butler, Chautauqua, Cherokee, Cowley and 11 more | 3 hr |
| Jun 16, 10:48 PM CDT | Mesoscale Discussion | SPC | Allen, Anderson, Bourbon, Butler, Chautauqua, Cherokee and 10 more | 87 min |
| Jun 17, 12:17 PM CDT | Mesoscale Discussion | SPC | Atchison, Brown, Clay, Cloud, Jackson, Jewell and 12 more | 58 min |
| Jun 17, 12:52 PM CDT | Tornado Watch | SPC | Atchison, Brown, Doniphan, Jewell, Marshall, Nemaha and 4 more | 8 hr |
| Jun 17, 2:29 PM CDT | Mesoscale Discussion | SPC | Cheyenne, Decatur, Graham, Norton, Phillips, Rawlins and 5 more | 61 min |
| Jun 17, 2:47 PM CDT | Mesoscale Discussion | SPC | Brown, Doniphan, Jewell, Marshall, Nemaha, Phillips and 3 more | 28 min |
| Jun 17, 3:30 PM CDT | Tornado Watch | SPC | Cheyenne, Decatur, Norton, Rawlins, Sherman, Thomas | 8 hr |
| Jun 17, 3:55 PM CDT | Severe Thunderstorm Watch | SPC | Barber, Clark, Comanche, Edwards, Ford, Kiowa and 4 more | 7 hr |
| Jun 17, 5:26 PM CDT | Mesoscale Discussion | SPC | Barber, Clark, Comanche, Edwards, Ford, Kiowa and 4 more | 94 min |
| Jun 17, 5:43 PM CDT | Mesoscale Discussion | SPC | Brown, Cheyenne, Cloud, Decatur, Doniphan, Graham and 15 more | 92 min |
| Jun 17, 3:07 PM CDT | Mesoscale Discussion | SPC | Bollinger, Cape Girardeau, Jefferson, Madison, Perry, Sainte Genevieve and 2 more | 23 min |
| Jun 17, 6:42 PM CDT | Mesoscale Discussion | SPC | Audrain, Boone, Buchanan, Caldwell, Callaway, Carroll and 43 more | 2 hr |
Nearby
Tornado Watches in Missouri, 2009Tornado Watches in Kansas, 2009Every tornado watch in 2009
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.